问题 解答题
计算,能简算的要简算.
(0.45-0.45×
1
3
)÷45%          
3
8
×7.9+
3
8
×10%
答案

(1)(0.45-0.45×

1
3
)÷45%,

=(0.45-0.45×

1
3
)÷0.45,

=(0.45-0.15)÷0.45,

=0.3÷0.45,

=

2
3

(2)

3
8
×7.9+
3
8
×10%,

=

3
8
×7.9+
3
8
×0.1,

=

3
8
×(7.9+0.1),

=

3
8
×8,

=3.

单项选择题
单项选择题